Track warrant
Track warrants are systematized permissions used on some rail lines instead of signals. As an example, the Burlington Northern Santa Fe Railway (BNSF) uses track warrants on the "El Paso Sub" line which runs from Belen, New Mexico to El Paso, Texas. There are no electrical signals on this route.
Train drivers communicate by radio with the dispatcher (in this example located in Fort Worth, Texas) and receive their warrants for sections of track, with speed limits and beginning and ending mileposts delineated. Maintenance crews also get track warrants so they can have the section of track to themselves as needed.
See also
Categories: Stub